FULLY MECHANICAL PNEUMATIC EXCESSIVE HEAT OR/AND FIRE LINE-TYPE DETECTOR, AND SYSTEM, METHODS, APPLICATIONS THEREOF

摘要

A fully mechanical pneumatic line-type excessive heat or/and fire detector, and, system, methods, and applications thereof, for detecting and warning of conditions of excessive heat or/and fire. The detector includes a detector testing switch apparatus for testing operable condition and status of the excessive heat or/and fire detector, and is operatively connectable to an externally located system control device, as an overall detection system. The detector is automatically or manually activated. The system includes the excessive heat or/and fire detector. Detector and system are configured and operable according to rate of temperature rise or/and fixed temperature type detection modes. Applicable in a wide variety of environments, such as of vehicle engines or machine, which may involve generation of excessive heat or/and fire, where there is need to detect and warn of a condition of excessive heat or/and fire, in a practical, reliable, robust, and cost effective manner.

主权项

1. A device for detecting excessive heat or/and fire, the device comprising:
a closed line-type tube containing a gaseous fluid whose pressure is responsive to variations in temperature, for detecting and sensing a potential condition of excessive heat or/and fire; a fluid flow restrictor connected to said closed line-type tube, and in fluid communication with said closed line-type tube fluid and surrounding atmosphere; a pressure switch connected to said closed line-type tube and in fluid communication with said closed line-type tube fluid, and within which a pressure difference is produced in response to a change in pressure of said closed line-type tube fluid; a detector external connector assembly connected to said pressure switch and connectable to an external control device, and having electrical contacts configured for contacting each other when said pressure difference in said pressure switch exceeds a threshold value, for actuating said external control device; and a detector testing switch connected between said closed line-type tube and said pressure switch, in fluid communication with said closed line-type tube fluid, and manually operable for generating a pressure pulse in the device, for testing operable condition and status of the device, and for manually activating the device.